TM 5-4210-220-343-8.ENGINE - ContinuedINSPECTIONWARNINGDry cleaning solvent P-D-680 (safety or Stoddards solvent) is potentially dangerous Avoid repeated andprolonged breathing of vapors and skin contact with the liquid. Do not use near open flame, arcingequipment or other ignition sources. Always wear eye protection and protective clothing. The flash pointof P-D-680 is 100 to 138 deg. F (30 to 59 deg. C)Death or serious injury could occur if compressed air Is directed against the skin. do not use compressedair for cleaning or drying unless the pressure Is/has been reduced to 30 psi (2 11 kg/cm2) or less. Whenworking with compressed air, always use chip guards, eye protection and other personal protectiveequipment.(1) Thoroughly clean the crankshaft with dry cleaning solvent (item 10, Appendix B). Remove plugs (11) andclean out the oil passages with a stiff wire brush. When clean, dry the crankshaft with compressed air, andreplace the plugs.3-175